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Residential & Commercial
Part L Compliance 

The Value of Experience


Independent Specialist for Part L
Building Regulations

We provide a single point multi disciplined resource to help our clients to comply with all their Part L obligations. We are dedicated, experienced and accredited with the vision to quickly assess client requirements and offer effective solutions

Free Quotations

Simply send us an email

outlining your requirements 

Ideally plans with a specification 

will help 

Expert Advice 

Initial consultation to ensure that we provide a cost effective solution that meets your needs


In excess of 15 years of experience 

Fast Efficient

Once we have received all the information required .


We usually are able to provide a turnaround within 5 working days

Accredited Licensed & Insured

Dedicated  experienced fully accredited Part L for both commercial and residential

including extensions and conversions

Fully Insured PI and PL


Why Choose Us

Our Services Include

Renovation Construction

Extension & Conversions Building Regulation Calculations

Heatloss Calculations

Exterior of Modern Suburban House

Residential Part L

SAP Calculations

Residential Part O

TM59 overheating Calculations

Modern Office Building

Commercial Part L

SBEM Calculations

What our Clients say about us

We have been working with Mike Ovenden of Gecko for a number of years now and he has always proved to be a very pro-active , efficient and professional consultant and doesn’t mind “ going the extra mile” to assist you with projects we are constructing . His very valuable input and collaborative attitude is to be commended . He is always our “go to” consultant for anything  energy conservation wise

Paul Green  Operations Manager

Gecko have helped us over many years to navigate the regulatory process on a range of domestic projects including Listed Buildings and have been invaluable in being proactive and advising us on all thermal issues.

Stuart Palmer

Having worked with Gecko for a number of years, we have found them very flexible, efficient, practical and proactive in their approach to establishing the best solutions for the project. At TP Engineering Services we find we are now using Gecko exclusively on Part L SAP calculations and Level 4 SBEM assessments.

Gary Sealey

We have been working with Mike for many years now and his knowledge and understanding of all things Part L is a vital component of our business.  Highly recommended.

Ben Morris

I have worked with Mike for a number of years in my role as a house designer and can confirm that he has always provided a very cost effective and efficient service which has been appreciated not only by myself but also by my many clients


I would have no hesitation in recommending his services to any one who also expects the same level of commitment to energy efficiency as Mike shows

Peter Rudge

Let's Discuss Your Next Project

Fill out the form, email us or call us

to request a fee proposal

27 Fulwoods Drive


Milton Keynes



01908 850109

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